Combine flour, baking powder, baking soda and salt in a medium bowl; set aside.
Beat eggs, corn syrup, oil and brown sugar in a large bowl. Stir in bananas and vanilla. Gradually stir in flour mixture, just until moistened. Fold in chocolate chips and walnuts, if desired.
Pour into a greased 9 x 5-inch OR 8-1/2 x 4-1/2-inch loaf pan.
Bake 50 to 55 minutes if using larger (9 x 5-inch) loaf pan OR 60 to 65 minutes if using smaller loaf pan until toothpick inserted in center comes out almost clean. Cool in pan 10 minutes; remove from pan and cool completely on wire rack.
BANANA BREAD WITH DATES VARIATION: Substitute 1 cup chopped dates for the chocolate chips.